Shaft-bearing



(No Model.)

l M. H. BARKER.

SHAFT BEARING.

{VIVEN-VDR: ma rn@ wvl-[JESSE UNITED STATES PATENT Orricn,

MELVILL H. BARKER, OF BOSTON, MASSACHUSETTS.

SHAFT-BEARING.

SPECIFICATION'forming part of Letters Patent No. 593,188, dated November 9, 1897. Appiicaaon nea ray 10,1897. serai No. 635.762. et, man.)

To @ZZ whom t may con/cern,.-

13e it known that I, MELvrLL H. BARRET-t, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Shaft-Bearings; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to improvements in shaft-bearings, and relates particularly to means for reducing the friction between the shaft and its bearings and for lubricating the same.

The object of the invention is to so construct a shaft-bearing in which antifrictionrolls are used that the torsional friction between the rolls, the casing, and the shaft is reduced to a minimum.

Another object is to improve the construction of an antifriction-bearing in which parallel antifriction-rolls are supported in a cage.

Another object of the invention is to provide a bearing of this nature with a lubricating device whereby a constant flow of lubricant may be maintained to the bearing, the lubricant being continuously raised and delivered to the bearing after its passage down lthe shaft.

Another object of the invention is to improve the construction of centrifugal lubricators with special reference to vertical shafts.

The invention consists in the peculiar construction of thebearing sleeve or casing, the raceway seated in the lower portion thereof, balls working therein, and the inverted annular raceway mounted on the balls, together with the cage supported on the inverted raceway and antifriction devices within the cage.

The invention also consists in the lubricantreservoir fixed on theshaft and constructed to collect the lubricant as it passes down the shaft, the bearing-sleeve having a channel connecting its outer surface with a lateral recess in its inner surface and a supply-pipe connected with such channel and extending into the reservoir.

The invention also consists in the construction of the bearing sleeve or casing and its peculiar combination with the novel antifriction-bearing.

The invention also consists in the peculiar construction of the reservoir and its supply pipe.

The invention also consists in such other novel features of construction and combination of parts which will hereinafter be more fully described, and pointed out in the claims.

Figure l represents a vertical sectional view of the improved combined bearing and lubricator. Fig. 2 represents a cross-sectional View of the same, taken on a linen: an, the bearing sleeve or casing beingslightly rotated to bring into position one of the supporting-screws which may be used when the bearing is utilized as a bolster. Fig. 3 represents a plan view of the supplypipe.

Similar nu mbers of reference designate corresponding parts throughout.

In shaft-bearings of this nature it is found in practice that by slight variations in parallelism between the shaft, the antifrictionrolls, and the casing a certain torsional resistance to the free action of the rolls is set up, particularly when the slightest inaccuracy exists in the contact between the ends of the rolls and the cage in which they are mounted. Agairuit is necessary that a constant supply of lubricant be carried to the parts of the bearing, and `economy requires that the lu bricant be repeatedly used in the same bearing.

In the drawings, A represents the vertical shaft to which the bearing is to be applied, either adjacent to the step which supports the' shaft or intermediate the length of the shaft, as a bolster-bearing. f

Embracing the shaft is a two-part cage formed of the upper and lower semicircular rings 5 and 6, connected by vertical plates, as 7. This cage is of the ordinary construction, and between the plates 5 and 6 are the usual parallel antifriction-rolls 8 S.

The casing 9, corresponding to the usual bearing-sleeve, has an enlargement 10, on which the supporting and alining screws, as 11, may bear. Through this enlargement is formed one or more channels 12. Usually two are used, as shown, connecting with the recess or recesses 13, formed in the inner surface lof the casing and extending laterally from the channel in order to supply several IOO of the rolls with lubricant. At the lower endl the casingfg) is Afurnished with-anfinterionlcutawayportion in which the upwardly-facing annular raceway 14 is seated, being secured and supported by the flange 15, secured to the casing in any manner and embracing the shaft, but out ofcontact therewith. Orl-the raceway 14 is a series of balls 16, on which works the inverted raceway 17, free torevolve about the shaft on the balls and supporting the plates 6 of the roll-cage, which may ory maT not beattachedthereto I- pre-4 fer that this raceway 17 shall be free from both the shaft and fromthe cage-inorder' toeffect the utmost independence of action under any resistance. to the revolution: of, the cage.

Below the casing is mounted the reservoir 18,.havingthe upwardlyextendingfcircular Wall`1'9,I furnishedwitli: the dishedA reflector' 20, .between 1 the ledge of'which ands the lowerx portiolrof the casingi'sthe aunularsopening 21;, The reservoir is'fixedv tol the shaft by means offtheestufingeboxZZ, the:upper1 pontionofswhi'ch forms the conical'1nember'23,. and the cap 24i7 screwingzonto the lowers sleeve: portion of the' stuffing-boxn to force: they fol'- lowen-25 against the packingzin thefboxc Oventhechannelfl inthe casingris secureda theupper,` end' ofa the) supply-pipe 26., 'llhiss pipe extends down lthrough thezopening 2l.I and' thenv curves outward toward@ thenner periphery of the y-lubricator.'-Walle19,7 where it. i'sprovided With the-branchifitti'ngfr 2.7.', one opening? irrl which is furnished with ai: screwplug-28u Inioperation; the reservoir'is supplied with; adeterminedlamount of; lubricant` uponlthezy rotation ofzthe-shaft carrying, the reservoirs. 'Ehe centrifugalA actioni impelsthe lubricant. towardf the Wall 19 of,- thevreservoirnwliere ai portionrenters theA openinginthetting 27 thevpressure .from-the centrif ugalaction' being; sufficient toY force-the lubricantup.y thef supply-'pipe throughzthe channelzlfzto :the :re-` cess 13, where it collects and is supplied. tof the rolls- 8 Sand from them to,l the shaft, thence-passing d'owntheshaft tb the conical memberQ-S, by Whichitis4 directed .backintoi into the reservoir.

The deflector 20 prevents the escape'of the* lubricant under the sudden.` starting. of the shaft,`and its edge is free from interference wit'hthe supplyfpipe on pipes.

Having thus described my invention, I claim as new and desire to secure 4by Letters 'Patent- 1. In asl1aft-bearing,he combination with ia-casing; an-upWardly-facing'raceway seated therein, a series of balls on the raceway, and laninverted raceway resting on the balls and independent of the shaft, of a cage supported by the inverted raceway, and a series of rolls tcontainedwithin the ,cage and bearing on the 'inner surface ofthe casing.

2?. ln a-shaftbearing the combination with aca'sing having a circumferentially-extending recess in .its inner surface anda channel connecting. the recess with the outer4 surface ofthe casing, a'rollenbearingfcontainedwvitliin thecasinggand'an independent antifricing, of' a. shaft, journaledfl in; the bearing,.a reservoir embracing the' shaft and fixed-thereto,` and! a; supply --pipe connected with the channelI-i'n'the casing, .and eX-tendinginto the reservoir:

3.. In .la shaftebearinghe vcombinationiwith ashaftf. and casingi having a` channell extendingzthroughits :Wall of alreservoirfhaving a stufling-box embracing-the-shaft, aeper-ipheral wall, and afvdis-hed4 deiector extendingjuwardifromvsaid walltowardthe casing, and ansupply-'pipe lconnectedwith: the chanbetween the casing and theedge'of the deflectolgqandfthen outwardlytow-ardl the wall open=in adirectionioppos-iteto 'thatpof the `rotation'off the shaft7 and: means forI securing thefrcservoir t'othe-shaft..

bore of' which fis enlarged-at its ylowerend, ,the raceway 14. seated in this enlargement, the ange 15'secured tovthelowerendiof the-casing and supporting the raceway,balls 1G working` on thefraceway and.- the inverted raceway 17, mounted'. on' said' ballsfarcagesupdevices :carried the cage;

MELVILL .f H; BARKER, l/Vitnesses:

HENRY J'.MILLER CHARLESv W. WILKINS,

tion-bearingy for supporting: the roller-bear-V nel in;A the 'casing' andf extending, downward ofL the reservoirgandihavingra@curved fittingr 4; The combinationwith the casingl, .the

ported: on thel raceway- 17, and antifriction 

